Content originally posted in LPCWare by Ex-Zero on Mon Feb 18 02:00:23 MST 2013
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So can we directly interface it with 5V logic devices without using any level shifters?
Yes :)
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Is LPC1768 compatible with both 5V input and output ??
No :eek:
Datasheet is talking about:
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5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis.
So you have to ask your hardware engineer or read the datasheet of your 5V device which input levels are necessary ;)
Note: If LPC output voltage is too low, you can also try to increase VDD to 3.6 (= VDD max) ;)